Impressed, but not blown away, yet. They need some EQ or more burn in out of the box. Running them for another hour or so before I try again.

I always use Impulse Response samples, freq response charts, or Accudio from Golden Ears to EQ the best out of my iems/headphones. I just tuned my M50, and the QB2 just aren't beating that sound. Once charts appear for these, I think I can get these to come close.

Keep in mind, these are $30 and the M50 is $150 retail, so that says a lot.